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arXiv 0802.2390math.GTmath.GR
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群列的同调稳定性

Homological stability of series of groups

Tim D. Cochran, Shelly Harvey

摘要:

“一个群的哪些方面在同源等价物下是不变的或稳定的?”在这方面的模型定理是J. Stallings在1963年的结果,即在任何群的积分同调等价下,下中心序列保持不变。此后出现了各种其他性质的定理。Stallings自己证明了类似的定理同调理性或模p系数。这些涉及不同系列的群体--下中心序列的变异。W.德怀尔广义Stallings'积分结果较大类的地图,工作是完成在其他情况下的作者。最近,作者证明了类似物的定理Stallings和德怀尔的变化的导出列。上述定理各不相同,但显然有许多共同之处。在这里,我们提出了一个新的概念,即一个子群的稳定性,或一系列的子群下的一类地图,提供了一个框架,所有这些定理可以被视为。我们将其与同调本地化的群体,这是一个以前研究得很好的框架,也可能适用于这些问题。

英文摘要:

``What aspects of a group are unchanged, or stable, under homology equivalences''? The model theorem in this regard is the 1963 result of J. Stallings that the lower central series is preserved under any integral homological equivalence of groups. Various other theorems of this nature have since appeared. Stallings himself proved similar theorems for homology with rational or mod p coefficients. These involved different series of groups- variations of the lower central series. W. Dwyer generalized Stallings' integral results to larger classes of maps, work that was completed in the other cases by the authors. More recently the authors proved analogues of the theorems of Stallings and Dwyer for variations of the derived series. The above theorems are all different but clearly have much in common. Here we present a new concept, that of the stability of a subgroup, or a series of subgroups under a class of maps, that offers a framework in which all of these theorems can be viewed. We contrast it with homological localization of groups, which is a previously well-studied framework that might also be applied to these questions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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